So, when AA reads a book in English it's wonderful, the skies are blue and the birds are chirping, but when dog reads English books:
1) Angellous can read greek. So he can actually follow arguments based on analysis of the greek
2) There is a difference between reading any book which happens to summarize info on Q, even if it was written by an expert like Crossan or Mack, and reading a book (in any language) which is intended to explain in detail the arguments for Q and/or Markan priority. You haven't read these, nor have you read the works expressing the minority view, so you aren't even familiar with the detailed arguments for or against, let alone able to evaluate them
3) You accept Q and Markan priority not out of some critical investigation but because a few books told you that it is widely accepted by experts, and as it doesn't go against your preconceived views, you were more than happy to jump on the bandwagon.